Chemtrails over New Orleans, Louisiana12-23-10 (photo by Michele Gaudin)

Contrails, or condensation trails, are trails of water vapor made by the exhaust of aircraft engines. But, that's not what we're talking about here.

We're talking about chemtrails (short for "chemical trails"), which are the topic of great controversy. Now, we're not pilots, or cloud experts, or scientists of any kind. So what do we know? Not much. Except this: Try looking up once in a while. ("Look! Up in the sky! It's a bird! It's a plane! It's . . . tic tac toe?").

From our October 20, 2010, show"What in the World are They Spraying?" That's a very important question. It's also the title of a new film (see trailer, right) produced by G. Edward Griffin, who was a guest on our December 19, 2009, show to discuss The Report from Iron Mountain, itself a fascinating topic. On our October 20, 2010, show, we were joined by Michael Murphy, the journalist who stars in the film and who did the investigation and research for it.